Engine



0. E. CLARK.

Feb. 20, 1923.

ENGINE. man JUNE :9", 1819.

f% SHEETS-SHEETI AOR/VEY Feb.20,1923. 1,445,996. 0. E. CLARK.

ENGINE.

FILED JUNE 19. 1919. 4 SHEETS-SHEET 2.

INVENTOR A NORA/Ex 0. E. CLARK.

Feb. 20, 1923.

ENGINE.

FILED JUNE19, 1919.

4 SHEETS-SHEET s Patented Feb. 20, 1923.

OMAR n. CLARK, or DENVER, coronnno, nssrenon'ro THE DENVER nocK DRILL MANUFACTURING COMPANY, or. DENVER, COLORADO, A oonronn'rron or. DELA- WARE. 1

ENGINE.

Application filed June 19, 1919. Serial No. 305,249. 7

To all whom it may concern: 1

v Be it 'knownthat I, OMAR E. CLARK, a citizen of the United States, residin at Donver, in the county of Denver and State of Colorado, have invented certain new and useful Improvementsin Engines, of which the following is a specification.

Therpresent invention relates to motor structures, and one of the primary objects is to provide a very compact mechanism of relatively simple structure that will operate at high speed and produce a relatively great amount of power. p 1

further and important object is to provide such a motor coupled up to or built in a driven mechanism, so thatthe entire apparatus will occupy but a small amount of space, and is thus peculiarly applicable for use in confined places.

In the accompanying drawings Figure 1 is an-end elevation of the 'pre': fe'rred embodiment of the invention. 1 Figure 2 is a similar view with the plate removed. 1 1

Figure 3 is a cross sectional view on the line 33 of Figure 4. I Figure 4 is'alongitudinal sectional View. "Figure 5 is a detail face view of a portion of the casing head platewith the controlling valve removed.

Figure 6 is a detail perspective view of the spindle member. l a i I Figure 7 is a detail sectional view through one of the relief valves.

Figures 8 and 9 are detail sectional views through the controlling valve structure,-

head

showing a valve in different positions.

Similar reference numeralsdesignate corresponding ,parts in all the figures of the drawings.

In the embodiment illustrated, a support is employed, comprising abase 12 which may be of any suitable configuration, but preferably has a recessed portion 13 forming part of a clamp member, so that the. apparatus can be mounted on a rock drill. supporting column or the like; One endaof this support is provided with a casing 14 having a removable headplate 15, and said head plate carries an integral spindle16 that is disposed eccentrically' to the peripheral wall 17 of'the casing. The opposite wall of other conduit is. connected.

said casing is provided with a concentrically disposed journal bearing 18 preferably of the roller or ball type. WVithin the casing 14 is located a rotatable drum member 19 havinga gudgeon 20 A cylinder block 23 is rotatably mounted FmE--. 1 i

on the .spindle'16, and is also provided with radial cylinders 24, in which reciprocate outer ends of said cylinders. These pistons 25 are provided at their outer terminals with oppositely extending ears 26, in which are j ournaled rollers 27 that run upon the wear plates 22.

-Motive fluid from any suitable source is I supplied to, the motor above described through a valve casing-28 mounted on the head plate 15. Saidvalve casing [has an hollow pistons 25 that project beyondthe intake nipple 29to which a supply hose or opens into a central chamber 30 in the valve casing 28, and on opposite sides of said central chamber are other chambers 31 and 32 ,in communication with the central chamber by means of ports 33in the partitions that define said chambers. The chambers 31 and 32 communicate with passageways 34, 35, extending longitudinally through the spindle 16, said passageways being also in communication with opposite ports 36 and 37 laterally opening through the periphery of said" spindle. The cylinder block 23 is provided with ports 38 opening into the different cylinders and arranged to alternately communicate This nipple with theports 36and 37 as the cylinder block rotates. The valve casing 28 is. furthermore provided with exhaust ports 39 located outside the chambers 31 and 32 and in 'com-.

munication with the same through ports 40. It will be noted that the ports 37 and 40 are in alignment and receive a reciprocatory controlling valve 41 having a en ral groove 42 and cut away ends or channels 43 and44, one end of the valve 41 having an extended shank in the form of arack 45 engaged by a gear segment l6 journaled in one end of the valve casing 28 and having an exposed actuating handle 47.

The passageways 3 1 and 35, as already explained, extend entirely through the spindle 23 and their inner ends are provided with relief valves as indicated in Figure 6, one of said relietvalves being shown in detail in Figure 7. Each of the valve structures, as illustrated, comprises a hollow plug 4:8 that is threaded into the passageway, and'has in turn threaded into it another plug 4L9 having a central bore 50 that terminates in a valve seat 51. A ball valve 52 cooperates with the seat and is normally held thereagainst by a spring pressed plunger 53 slidably mounted in the inner end of the plug 48. The bore of said plug 18 is in communication withthe passageways in which the plug is placed, by means of ports 5 communicating with said bore and with the passageway.

Briefly outlined, the operation of the apparatus is as folloivszlvhen the controlling valve is in its central position, as shown in Figure 1, motive fluid supplied to the central chamber with the nipple 29 is denied access to the motor. When the valve is shifted tothe position shown in Figure 10 mo tive fluid will flow from the chamber 30 to the chamber 31, and thuspass through the passages 34: and through the port 36. As a consequence it will enter each cylinder as indicated in Figure 3, as rapidly as the ports 38 communicate with the ports 36. The eccentric mounting of the c ders with respect to the drum will thi ause the said drum to rotate in the direction indicated by the arrows in Figure-3. During their inward movement the cylinder ports 38 are in communication with the port 37 as illustrated in Figure 3, and consequently the exhaust passes into the channels 35, thence into the chambers 32 and out through the exhaust port 39. It the valve is shifted to the opposite extreme, as illustrated in Figure 8, the flow of fund is'yust the reverse. or as illustrated in Figure 3, and consequently a reverse rotationof the drum takes place. The outer casing may be utilized as a lubricant container and as the drum rotates therein, it will be evident that the lubricant will be carried and splashed over the mechanism, thusinsuring thorough lubrication. It turthermore occurs that there is ordinarily some leakage past the pistons which may build up pressure in the drum, but this pressure is taken care of by the relief valves 418-53, one set oi which is 01"- course always connected with the exhaust permitting means, and thusallows any excessive pressure to open the valve 52 and enter such means. On the other hand, the pressure against those valves which are in the supply passages, serves to maintain th iid valves closed.

While it will be evident that the motor confined places, such as mine work. It

therefore is illustrated as part of an apparatus of that character. To the gudgeon 20 is fixed a tapered shaft 55 rotatably mounted in a fixed housing 56 secured to the, wall of the casing 14 in which said gudgeon20 is journaled. Rotatably mounted on the housing 56 is a winding drum 57 having at one end a brake flange 58. Its opposite cable retaining wall or flange has an internal gear 59. The outer end of the housing156 is engaged with a gear case 60 that encloses the internal gear 59 and has itsinner. open side closed by the drum, flange that carries the internal gear 59. Said gear case alsocontains a gear 61 mounted on a shaft 62, said shaft having a pinion 63 in mesh with the internal gear 59. A pinion 64:. is in mesh with a gear wheel 61 and is, carried by .a sleeve 65 feathered as illustrated at, 661011 the end of the shaft 55, the sleeve projecting from the gear case 60 and having a suitable actuating knob 67. A brake band 680i. any desired type and operated by anysuitable means, not shown, cooperates with the brake flange v58 ina manner well understood.

It will be evident that when the. apparatus is siutably clamped to a-support or holding means, if the engine is runjin either of Oppo site directions, the shaft 55 will be correspondingly. driven, and if the pinionis positioned so that it is in" mesh with the gear 61, the drum 5.7 will be rotatated; .If. desired the pinion 64 can be movedto aposition where it is out of mesh with the gear61, so that the winding drum'will be free torotate in either direction independently 0f the motor, its movement being controlled by the brake. band 68.

the construction, operation and many advantages of the herein described invention will be apparent to those skilled in the: art, without further description, and'it will be un derstood, that various changes in the size, shape, proportion, and minor detailsv of con struction, may be resorted .to without departing from the spirit or sacrificing any of the advantages of the invention. 7

Having thus fully described my. invention, what I claim as new, anddesire'to secure by LettersPatent, is r i i 1. In apparatus of the character set forth, the combination with a'support including spaced casing elements, one of which hasan open inner side, of a winding .drum jourby the shaft and engaged with the said side wall of the drum. n 2. In apparatus of the character set forth, the combination with a support, of a motor mounted on one end of the support, a gear case mounted on the other end of the support and having an open inner side, gearing in the gear case, means operated by the motor for driving the gearing, and a winding drum mounted between the motor and the gear case and including a cable retaining flange that closes the open inner side of the gear case and is provided with a gear with which the gearing in the gear case engages.

8. In apparatus of the character set forth, the combination with a support including spaced casing elements, one of said casing elements having an eccentric-spindle therein, and a concentric bearing,"

j ournaled' in the bearing and surrounding the spindle, a cylinder block rotatable on the spindle, pistons in the cylinders of saidblock operating against the. drum, means for supplyin dle to the cy inders, afshaft extending from the drum to'the opposite casing, afdrum rotatable around the shaft, and gearing in the second casing connecting the shaft and drum.

' In testimony whereof,.I afiix my signature in the presence of two witnesses.

OMAR E. CLARK.

Witnesses V LILLIAN V. J oHNsoN, BESSIE LANE.

of a drum motive fluid through the spin 

